This is cne of the r-are text books written in the discipline of Nuclear Reactor Analysis, where the author has considered the interests of both scientists and practising engineers, in addition to serving the needs of the academia. The most attractive feature of this book is a balanced treatment of theory and practice of the subject matter. The theoretical foundations of the reactor design methods are explained with simplified definitions and relevant practical illustrations. The author scans through quickly the traditional aspects of the so-called reactor physics and takes the reader through the details of the analytical aspects in a conventional manner. Hcwever, there is a definite departure from the classical method of approach in order to avoid lengthy and repetitive discussions, that are available in many standard text books on reactor physics. The chief departure fran tradition is the priority accorded to the treatment of the energy part of the problems as opposed to the spatial Dart normally devoted to by other authors . A similar unorthodox approach has been applied while dealing with the solution of the various equations by giving priority to computer oriented mrethods as opposed to the classical solutions.

Nuclear reactor analysis

The quest for the ideal inorganic scintillator

Introduction to Inverse Problems in Imaging

Neutron Physics By K H Beckurts and K Wirtz Pp x + 444 (Berlin: Springer-Verlag, 1964) 68 DM Introduction to Neutron Distribution Theory By L C Woods (Methuen's Monographs on Physical Subjects) Pp xii + 132 (London: Methuen and Co, Ltd; New York: John Wiley and Sons, Inc, 1964) 28s net

Nuclear Reactor Physics

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RAMS+C informed decision-making with application to multi-objective optimization of technical specifications and maintenance using genetic algorithms

Solution of the Lambda modes problem of a nuclear power reactor using an h–p finite element method

High Order Finite Element Method for the Lambda modes problem on hexagonal geometry

Digital mammographic image processing often requires a previous application of filters to reduce the noise level of the image while preserving important details. This may improve the quality of digital mammographic images and contribute to an accurate diagnosis. In the literature, one can find a large amount of denoising techniques available for different kinds of images. We have adapted some of the existing denoising algorithms to mammographic images. We compare the effect of different denoising filters acting on digitized mammograms. The considered filters are: a local Wiener filter, a wavelet filter, a filter based on independent component analysis, and finally, a filter based on the diffusion equation. The noise reduction is measured by the mean squared error.

Comparing methods to denoise mammographic images

The images obtained by X-Ray or computed tomography (CT) in adverse conditions may be contaminated with noise that can affect the detection of diseases. A large number of image processing techniques (filters) have been proposed to remove noise. These techniques depend on the type of noise present in the image. In this work, we propose a method designed to reduce the Gaussian, the impulsive and speckle noise and combined noise. This filter, called PGNDF, combines a non-linear diffusive filter with a peer group with fuzzy metric technique. The proposed filter is able to reduce efficiently the image noise without any information about what kind of noise might be present. To evaluate the filter performance, we use mammographic images from the mini- MIAS database which we have damaged by adding Gaussian, impulsive and speckle noises of different magnitudes. As a result, the proposed method obtains a good performance in most of the different types of noise.

Gumersindo Verdú

Papers

Solution of the Lambda modes problem of a nuclear power reactor using an h–p finite element method

High Order Finite Element Method for the Lambda modes problem on hexagonal geometry

Comparing methods to denoise mammographic images

Medical image restoration with different types of noise

A time and frequency domain analysis of the effect of vibrating fuel assemblies on the neutron noise